remcos | c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd

General

Target

c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe
Size

1018KB
MD5

82eada34cc687b8518c5dbb56eff51a7
SHA1

59609925ace4619730267711badbf32da98bd6c7
SHA256

c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd
SHA512

e3ca53580d24d810b539ab58572bb9cd964e4cff918839d4027b31a9aef645fdc5bde7e33baed905386fdfdcf14f97dfea99f670794a58af4b528bd26f7eb13b
SSDEEP

12288:Cp+rgRNyA55IxJ+feDOa9rZj5XqkJD0QrOod7XxlW91RRzwAY3AzC2:CpugRNJI1D39dlfGQrFUxwAeAzC2

Score

10^/10

remcos host discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

Host

C2

213.183.58.19:4000

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
remcos.exe
copy_folder
remcos
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
false
install_path
%AppData%
keylog_crypt
true
keylog_file
read.dat
keylog_flag
false
keylog_folder
CastC
keylog_path
%AppData%
mouse_option
false
mutex
remcos_sccafsoidz
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screens
screenshot_path
%AppData%
screenshot_time
1
startup_value
remcos
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Remcos family
remcos

Executes dropped EXE 2 IoCs

pid	Process
2148	sbietrcl.exe
2892	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
1620	c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2148 set thread context of 2892	2148	sbietrcl.exe	31

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
1620	c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe
1620	c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe
1620	c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe
1620	c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe
1620	c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe
1620	c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe
2148	sbietrcl.exe
2148	sbietrcl.exe
2148	sbietrcl.exe
2148	sbietrcl.exe
2148	sbietrcl.exe
2148	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1620	c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe
Token: SeDebugPrivilege	2148	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1620 wrote to memory of 2148	1620	c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe	30
PID 1620 wrote to memory of 2148	1620	c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe	30
PID 1620 wrote to memory of 2148	1620	c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe	30
PID 1620 wrote to memory of 2148	1620	c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe	30
PID 2148 wrote to memory of 2892	2148	sbietrcl.exe	31
PID 2148 wrote to memory of 2892	2148	sbietrcl.exe	31
PID 2148 wrote to memory of 2892	2148	sbietrcl.exe	31
PID 2148 wrote to memory of 2892	2148	sbietrcl.exe	31
PID 2148 wrote to memory of 2892	2148	sbietrcl.exe	31
PID 2148 wrote to memory of 2892	2148	sbietrcl.exe	31
PID 2148 wrote to memory of 2892	2148	sbietrcl.exe	31
PID 2148 wrote to memory of 2892	2148	sbietrcl.exe	31
PID 2148 wrote to memory of 2892	2148	sbietrcl.exe	31
PID 2148 wrote to memory of 2892	2148	sbietrcl.exe	31

C:\Users\Admin\AppData\Local\Temp\c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe
"C:\Users\Admin\AppData\Local\Temp\c5a367d23e35485e380c0468d1b12a02373e6330235b570d4a1fe76bcdc948fd.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1620
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2148
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
    3⤵
    - Executes dropped EXE
    PID:2892

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\CabA2A5.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe

Filesize
1023KB

MD5
240a383bbd7ba2c7066d43a47b4ffc37

SHA1
7acde83bc3cb0ab169c6a252b1c6f95368eb8a53

SHA256
c9a132f2fec783258b997f5d35c98b4962463d6bb52e3873925df983e329d59a

SHA512
af466056bbdd39f804fa1e86484e788bd4152c360c07ca489bb81e4da5b0d98d792cbd6c94a006983316c0b80d72d709db2a190ad2c91cb26d81a5d72cb2bd69

Download Submit
memory/1620-8-0x0000000074530000-0x0000000074ADB000-memory.dmp

Filesize
5.7MB

Download
memory/1620-9-0x0000000074530000-0x0000000074ADB000-memory.dmp

Filesize
5.7MB

Download
memory/1620-10-0x0000000074530000-0x0000000074ADB000-memory.dmp

Filesize
5.7MB

Download
memory/1620-11-0x0000000074530000-0x0000000074ADB000-memory.dmp

Filesize
5.7MB

Download
memory/1620-29-0x0000000074530000-0x0000000074ADB000-memory.dmp

Filesize
5.7MB

Download
memory/1620-0-0x0000000074531000-0x0000000074532000-memory.dmp

Filesize
4KB

Download
memory/2148-39-0x0000000074530000-0x0000000074ADB000-memory.dmp

Filesize
5.7MB

Download
memory/2148-30-0x0000000074530000-0x0000000074ADB000-memory.dmp

Filesize
5.7MB

Download
memory/2148-31-0x0000000074530000-0x0000000074ADB000-memory.dmp

Filesize
5.7MB

Download
memory/2148-40-0x0000000074530000-0x0000000074ADB000-memory.dmp

Filesize
5.7MB

Download
memory/2148-57-0x0000000074530000-0x0000000074ADB000-memory.dmp

Filesize
5.7MB

Download
memory/2892-47-0x00000000000D0000-0x00000000000E7000-memory.dmp

Filesize
92KB

Download
memory/2892-51-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2892-49-0x00000000000D0000-0x00000000000E7000-memory.dmp

Filesize
92KB

Download
memory/2892-45-0x00000000000D0000-0x00000000000E7000-memory.dmp

Filesize
92KB

Download
memory/2892-43-0x00000000000D0000-0x00000000000E7000-memory.dmp

Filesize
92KB

Download
memory/2892-41-0x00000000000D0000-0x00000000000E7000-memory.dmp

Filesize
92KB

Download
memory/2892-54-0x00000000000D0000-0x00000000000E7000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads